Rb-Sr, U-Pb, K-Ar Geochronologic Study of the Condrey Mountain Schist, Klamath Mountains, Northern California and Southwestern Oregon

克拉马斯山脉是奥陶纪至晚侏罗世的弧形构造省，在中生代板块会聚期间，北美西缘增加了洋弧和岛弧亲和岩。然而，吸积过程中的实际构造过程还没有得到很好的确定。最近的研究表明，暴露在克拉马斯山脉中北部的康德雷山片岩的一部分可能是方济各会建筑群向东的延续。如果得到证实，这将表明克拉马斯岩石已经沿着浅断层被推送到方济各会杂岩上方约100公里处。该项目将提供地质年代学、岩石学和同位素数据，以更可靠地建立康德雷山-方济各斯坎相互关系，并更详细地说明所涉及的沉积过程。

The Klamath Mountains are an arcuate structural province of Ordovician to Late Jurassic oceanic - and island arc - affinity rocks that were accreted to the western margin of North America during Mesozoic plate convergence. However, the actual tectonic processes during accretion are not well established. Recent work has suggested that parts of the Condrey Mountain Schist exposed in the north-central Klamath Mountains may be an eastward continuation of the Franciscan Complex. If confirmed, this would indicate that the Klamath rocks have been thrust about 100 km over the Franciscan Complex along shallow faults. This project will provide geochronologic, petrologic and isotopic data to more firmly establish the Condrey Mountain - Franciscan correlation and to allow a more detailed account of the accretion processes involved.